As far as I know, getting a divorce even with mutual consent is very difficult in India. It’s not a quick process. There will be a separation period of 1 year at least that would have to be established. The courts will put you through counseling and try to “save” your marriage – even if both of you say you don’t want to stay together. If you end up getting an Indian marriage certifcate, you might end up asking “Can I divorce abroad if my marriage is registered in India?”. If you are splitting up amicably, you may be better off getting divorced abroad – before the systems here make it “unamicable”.
That said, I am not a lawyer. This is just based on reading the comments on so many divorce threads here on reddit.